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Dissertations / Theses on the topic 'PWM motor drives'

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Published: 4 June 2025

Last updated: 1 August 2025

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1

Wu, Zhan-Yuan. "Energy efficient PWM induction machine drives for electric vehicles." Thesis, University of Sheffield, 2000. http://etheses.whiterose.ac.uk/14622/.

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The viability of any electric vehicle is critically dependent on it having an acceptable range between charges, a feature which is ultimately dictated by the capacity of the battery energy store. Considerable improvements in vehicle range are possible, however, by ensuring the most effective use of this limited energy resource through the minimisation of the losses in the electric drive-train, i.e. the combined machine and power electronic controller. A particular consideration is that, for the majority of the time, the electric drive-train will be operating at part load. The thesis investigat

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2

Bezanov, Goran. "On-line control of microprocessor-based PWM for A.C. drives." Thesis, Brunel University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.280761.

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3

Zhang, Feng 1973. "Investigation of electromagnetic interference of PWM motor drives in automotive electrical systems." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/80147.

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4

Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. https://etd.iisc.ac.in/handle/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Th

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Narayanan, G. "Synchronised Pulsewidth Modulation Strategies Based On Space Vector Approach For Induction Motor Drives." Thesis, Indian Institute of Science, 1999. http://hdl.handle.net/2005/139.

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In high power induction motor drives, the switching frequency of the inverter is quite low due to the high losses in the power devices. Real-time PWM strategies, which result in reduced harmonic distortion under low switching frequencies and have maximum possible DC bus utilisation, are developed for such drives in the present work. The space vector approach is taken up for the generation of synchronised PWM waveforms with 3-Phase Symmetry, Half Wave Symmetry and Quarter Wave Symmetry, required for high-power drives. Rules for synchronisation and the waveform symmetries are brought out. Thes

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6

Ibrahim, Zulkifilie. "Fuzzy logic control of PWM inverter-fed sinusoidal permanent magnet synchronous motor drives." Thesis, Liverpool John Moores University, 2000. http://researchonline.ljmu.ac.uk/5058/.

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7

Kshirsagar, Parag Mahendra. "Efficiency Improvement Strategies and Control of Permanent Magnet Motor Drives." Diss., Virginia Tech, 2015. http://hdl.handle.net/10919/77685.

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Permanent magnet brushless dc (PMBDC) and synchronous machines (PMSM) drives are favored in variable speed applications for their high efficiency operation. Energy efficiency improvement in such motor drives is of interest in recent times because of rising cost of energy. Accordingly, two current control options for improving efficiency of these drives are taken for study and they are; (i) injecting sinusoidal and non-sinusoidal currents in PMBDC machines and (ii) lowering switching frequency of inverter driving the PMSM but without having significant low ordered sidebands of currents. Both th

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8

Li, Yong. "Unified zero-current-transition techniques for high-power three-phase PWM inverters." Diss., Virginia Tech, 2002. http://hdl.handle.net/10919/26843.

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This dissertation is devoted to a unified and comprehensive study of zero-current-transition (ZCT) soft-switching techniques for high-power three-phase PWM inverter applications. Major efforts in this study are as follows: 1) Conception of one new ZCT scheme and one new ZCT topology; 2) Systematic comparison of a family of ZCT inverters; 3) Design, implementation and experimental evaluation of two 55-kW prototype inverters for electric vehicle (EV) motor drives that are developed based on the proposed ZCT concepts; and 4) Investigation of the ZCT concepts in megawatts high-frequency power conv

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9

Abdulrahman, Shakir M. "New optimal PWM strategies for a VSI induction motor drive." Thesis, Loughborough University, 1991. https://dspace.lboro.ac.uk/2134/7115.

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The applications of robust squirrel-cage induction motors in variable speed inverter drive systems have increased considerably due to the availability of easily controlled semiconductor switching devices. One problem encountered in inverter drives is the non-sinusoidal nature of the supply voltage, which results in increased motor losses and harmful torque pulsations producing undesirable speed oscillations. The latter effects are negligible at high frequency operation, due to the damping effect of the rotor and load inertia. However, torque pulsations and speed ripple may be appreciable at lo

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10

Abdelsalam, Ahmed Kadry Ahmed. "Medium-voltage PWM indirect vector controlled induction motor drive with a long motor feeder." Thesis, University of Strathclyde, 2009. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21996.

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This thesis studies two types of medium-voltage (MV) vector controlled PWM induction motor drives for long motor feeder applications, namely voltage source and current source based drives. As rectifiers and inverters are the main elements in any drive system, both are investigated, but with more emphasis on the inverter side. MV PWM current source rectifiers (CSR) usually use selective harmonic elimination as a modulating strategy which provides good harmonic reduction at a low switching frequency. The rectifier performance does not meet the IEEE 519 regulation concerning harmonics injected in

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11

Feng, Xiaohu. "Active filter for improving a switched reluctance motor drive's input power quality." Lexington, Ky. : [University of Kentucky Libraries], 2005. http://lib.uky.edu/ETD/ukyelen2005t00346/THESIS2.pdf.

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Thesis (M.S.)--University of Kentucky, 2005.<br>Title from document title page (viewed on January 23, 2006). Document formatted into pages; contains: x, 97 p. : ill. (some col.). Includes abstract and vita. Includes bibliographical references (p. 95-96).

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12

Zhang, Ruoju, and 張若菊. "A new PM hybrid motor drive for electric vehicles." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2000. http://hub.hku.hk/bib/B31472849.

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13

Zhang, Yong. "A DSP based variable-speed induction motor drive for a revolving stage." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/273.

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Variable speed drive technology has advanced dramatically in the last 10 years with the advent of new power devices. In this study, a three phase induction motor drive using Insulated Gate Bipolar Transistors (IGBT) at the inverter power stage is introduced to implement speed and position control for the revolving stage in the Frederic Wood Theatre This thesis presents a solution to control a 3-phase induction motor using the Texas Instruments (TI) Digital Signal Processor (DSP) TMS320F2407A. The use of this DSP yields enhanced operations, fewer system components, lower system cost and increa

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14

Ad'doweesh, K. E. "A microprocessor based PWM inverter drive incorporating a three-phase induction motor." Thesis, University of Bradford, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371459.

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15

Un, Emre. "Common Mode Voltage And Current Reduction In Voltage Source Inverter Driven Three Phase Ac Motors." Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609062/index.pdf.

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In this thesis various reduced common mode voltage (RCMV) pulse width modulation (PWM) techniques and active/passive common mode voltage (CMV) reduction methods for voltage source inverter driven three-phase AC motors are theoretically and practically investigated. A novel RCMV-PWM method, the near state PWM (NSPWM) method is proposed for operation at high modulation index. At low modulation index, a modified version of an existing RCMV-PWM method, AZSPWM1, termed as MAZSPWM, is proposed to mitigate the voltage reflection problem of the method. An optimum modulation algorithm combining NSPWM a

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16

Issa, Rihman H. "An investigation of efficient control strategies for a PWM inverter driven induction motor." Thesis, Loughborough University, 1987. https://dspace.lboro.ac.uk/2134/11783.

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Recent developments in power electronics switching devices have led to significant improvements in AC drives which, coupled with the obvious advantages of squirrel-cage induction motors, have generated a customerled demand for an increase in AC drive performance. This thesis describes the design and construction of a 3-phase pulsewidth modulated inverter using gate turn-off (GTO) thyristor switching devices, which drives a 0.75 kW 3-phase squirrel-cage induction motor. The inverter control circuit comprises a purpose-built large-scale integrated circuit, which generates the 3-phase pwm drive s

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17

Yang, Jian. "Prediction of the power losses of PWM inverter drives for permanent magnet synchronous motors." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06112009-063124/.

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18

Mosadeghi, Hadi. "Modeling and control of a fault-tolerant multiphase induction motor drive." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

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The conventional standard three-phase induction motors cannot operate inherently after the loss of a phase. The two-phase operation of a three-phase induction motor cannot supply the necessary performance in terms of torque and output power in applications that require high reliability such as electric traction applications, and electric ship propulsion. Therefore, one of the means to overcome this drawback is the addition of more phases to the motor, which forms the main focus of this thesis. This research aims to develop the control system of a six-phase induction motor with a single neutra

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19

Thelin, Peter. "Design and Evaluation of a Compact 15 kW PM Integral Motor." Doctoral thesis, KTH, Electrical Systems, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3322.

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<p>This thesis deals with the integral motor of tomorrow, and particularly with a variable speed, sensorless permanent magnet synchronous motor with an integrated converter. The rated power is 15 kW at 1500 r/min. The outer dimensions are approximately the same as for the equivalent standard induction motor.</p><p>Control strategies for pumps and fans, i.e. suitable loads for variable speed motors, are briefly described. The huge energy savings that can be made by reducing the speed instead of throttling/choking the flow are pointed out. Compared to installing an induction motor with a separat

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20

Hasan, S. M. Nayeem. "Hybrid Electric Vehicle Powertrain: On-line Parameter Estimation of an Induction Motor Drive and Torque Control of a A PM BLDC Starter-generator." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1208185834.

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21

Manzolini, Virginia. "Advanced algorithms for flux-weakening and sensorless control of interior PM and reluctance synchronous motor drives." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3427316.

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Everyone is noting that Permanent Magnet Synchronous Machines (PMSMs) are more and more invading home, commercial and industrial applications thanks to their superior performance and efficiency, high torque and power density. Due to these features, this kind of machines is widely employed in several fields of technology. In the transportation branch, electric traction based on PMSM is becoming a strong competitor with conventional propulsion systems based on either combustion engines or induction machines. Clear examples are pure and hybrid electric vehicles, trains etc... Due to the always mo

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22

Bobba, Phaneendra Babu. "Power management in PM BLDC motor driven electric vehicle fed from hybrid energy storage system." Thesis, IIT Delhi, 2014. http://eprint.iitd.ac.in:80//handle/2074/8195.

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23

MIGLIAZZA, Giovanni. "Studio di nuove soluzioni di Inverter a corrente impressa per sorgenti energetiche rinnovabili e per azionamenti elettrici in ambito aerospaziale." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2020. http://hdl.handle.net/11380/1200383.

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In questo lavoro di tesi è stata analizzata una particolare architettura di convertitore elettronico di potenza DC/AC denominata CSI (“Current Source inverter”). Storicamente, questa topologia è stata largamente impiegata per l’azionamento di macchine elettriche in media tensione. Il CSI, rispetto ai più diffusi Voltage Source Inverter (VSI) è caratterizzato da maggiori perdite di conduzione dei propri transistor ma è in grado di garantire un’affidabilità più elevata, siccome il corto-circuito di un qualunque mezzo-ponte (gamba dell’inverter) non determina una rottura (come nelle comuni archit

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24

Valle, Rodolfo Lacerda. "Controlador preditivo aplicado na regulação das correntes de um motor CC de ímãs permanentes sem escovas de baixa indutância." Universidade Federal de Juiz de Fora (UFJF), 2017. https://repositorio.ufjf.br/jspui/handle/ufjf/4085.

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Submitted by Renata Lopes (renatasil82@gmail.com) on 2017-04-18T15:37:21Z No. of bitstreams: 1 rodolfolacerdavalle.pdf: 15632691 bytes, checksum: 70a89dc2e4e38eb468aa2013be66ab1f (MD5)<br>Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-04-19T11:31:54Z (GMT) No. of bitstreams: 1 rodolfolacerdavalle.pdf: 15632691 bytes, checksum: 70a89dc2e4e38eb468aa2013be66ab1f (MD5)<br>Made available in DSpace on 2017-04-19T11:31:54Z (GMT). No. of bitstreams: 1 rodolfolacerdavalle.pdf: 15632691 bytes, checksum: 70a89dc2e4e38eb468aa2013be66ab1f (MD5) Previous is

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Cetin, Nebi Onur. "Design And Implementation Of Advanced Pulse Width Modulation Techniques And Passive Filters For Voltage Source Inverter Driven Three-phase Ac Motors." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612236/index.pdf.

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Advanced pulse width modulation (PWM) techniques such as space vector PWM, active zero state PWM, discontinuous PWM, and near state PWM methods are used in three-phase AC motor drives for the purpose of obtaining low PWM current ripple, wide voltage linearity range, and reduced common mode voltage (CMV). In some applications, a filter is inserted between the inverter and the motor for the purpose of reducing the stresses in the motor. The motor current PWM ripple components, terminal voltage overshoots, shaft voltage, and bearing currents, etc. can all be reduced by means of PWM techniques and

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Müller, Luke, and Kasper Sjöström. "Automatic Torque Control for Bicycle Driven Brushless DC (BLDC) Generator." Thesis, Högskolan i Halmstad, Akademin för informationsteknologi, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-44845.

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This work was carried out on behalf of Science Safari. Science Safari wants to create a product that facilitates the understanding of how much physical work is required to create electrical energy. This is done by cranking the pedals of a bicycle. The purpose of this work is to create a control unit that keeps the torque required to crank the pedals close to constant. The torque can be kept constant by creating a variable load for the generator, in this case, a pulse modulated JFET is used. The output of the current sensor and the Hall-effect sensor are used to calculate the required resistanc

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27

PEROTTI, MICHELE. "Software Solutions to Mitigate the Electromagnetic Emissions of Power Inverters." Doctoral thesis, Politecnico di Torino, 2020. http://hdl.handle.net/11583/2842505.

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28

Lee, Youngkook. "A Stator Turn Fault Detection Method and a Fault-Tolerant Operating Strategy for Interior PM Synchronous Motor Drives in Safety-Critical Applications." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16156.

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A stator turn fault in a safety-critical drive application must be detected at its initial stage and imperatively requires an evasive action to prevent a serious accident caused by an abrupt interruption in the drive s operation. However, this is much challenging for the case of an interior permanent magnet synchronous motor (IPMSM) drives because of the presence of the permanent magnets that cannot be turned off at will. This work tackles the problem of increase the stator turn fault tolerance of IPMSM drives in safety-critical applications. This objective is achieved by an on-line turn fa

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Faggion, Adriano. "Algorithms and Rotor Designs for the Position Estimation of PM Synchronous motors at Zero and Nonzero Speed." Doctoral thesis, Università degli studi di Padova, 2011. http://hdl.handle.net/11577/3427488.

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This thesis deals with the estimation algorithms, reassuming in detail the principles commons techniques and testing them in simulation and by experimentation. The following estimator typologies are discussed: MRAS estimator in the high speed region, estimator based on the high frequency injection signals in the low and zero speed region. As regards the MRAS estimator, after its description, a particular application that exploits this estimation solution is presented. Then, a sensorless control of a Permanent Magnet synchronous motor drive for a hybrid electric catamaran is reported. A Surfa

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Mikuška, Martin. "Střídač pro trojfázový motor." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2014. http://www.nusl.cz/ntk/nusl-220710.

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This master’s thesis goes into design of particular circuits for three phase inverter. Inverter’s control is ensured by digital signal controller MC56F8013 with his program. Principle of control is suggested for individual motors. Inverter design considerate universal use and capability for any three phase motor. Particular blocks are compatible each other.

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Preindl, Matthias. "Novel Model Predictive Control of a PM Synchronous Motor Drive; Design of the Innovative Structure, Feasibility and Stability Analysis, Efficient Implementation, Experimental Validation." Doctoral thesis, Università degli studi di Padova, 2014. http://hdl.handle.net/11577/3423480.

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This text focuses on advanced torque control of permanent magnet synchronous motor drives. A novel modular structure is introduced to simplify the design and implementation of Model Predictive Control (MPC). The layout consists of the control and the control framework. The dynamic control is the novel virtual flux controller, which is used to reach desired reference values, and the state observer, which is used to reduce effects of non-modeled system properties. The control framework consists of static mappings to simplify the control problem. Besides the alpha-beta and d-q transformations, a

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32

Silaghiu, Sorin Mihail [Verfasser], Peter [Akademischer Betreuer] Mutschler, and Bernhard [Akademischer Betreuer] Piepenbreier. "Design and test of a highly scalable servo drive system based on PM linear synchronous motors / Sorin Mihail Silaghiu. Betreuer: Peter Mutschler ; Bernhard Piepenbreier." Darmstadt : Universitäts- und Landesbibliothek Darmstadt, 2012. http://d-nb.info/1106114892/34.

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Kierstead, Harold Junior. "Design of a single-sided axial flux PM in-wheel electric vehicle machine with non-overlap stator windings." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/2007.

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Thesis (MScEng (Electrical and Electronic Engineering))--University of Stellenbosch, 2009.<br>ENGLISH ABSTRACT: With the current worldwide energy problems electric vehicles are set to replace conventional combustion engine vehicles. Electric vehicles with gearless in-wheel mounted brushless permanent magnet motors provide a more flexible and efficient means of vehicle propulsion but the electric motors, particularly the non-overlap stator winding type have not been fully researched. This study focuses on the selection and design of suitable in-wheel hub drive machine. Several machine topologi

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Aboelhassan, Mustafa Osman Elrayah. "Robustní řízení synchronního stroje s permanentními magnety a spínaným tokem." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2013. http://www.nusl.cz/ntk/nusl-233605.

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Je jasné, že nejúspěšnější konstrukce zahrnuje postup vícefázového řízení, ve kterém každá fáze může být považována za samostatný modul. Provoz kterékoliv z jednotek musí mít minimální vliv na ostatní, a to tak, že v případě selhání jedné jednotky ostatní mohou být v provozu neovlivněny. Modulární řešení vyžaduje minimální elektrické, magnetické a tepelné ovlivnění mezi fázemi řízení (měniče). Synchronní stroje s pulzním tokem a permanentními magnety se jeví jako atraktivní typ stroje, jejíž přednostmi jsou vysoký kroutící moment, jednoduchá a robustní konstrukce rotoru a skutečnost, že perman

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Adabi, Firouzjaee Jafar. "Remediation strategies of shaft and common mode voltages in adjustable speed drive systems." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/39293/1/Jafar_Adabi_Firouzjaeel_Thesis.pdf.

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AC motors are largely used in a wide range of modern systems, from household appliances to automated industry applications such as: ventilations systems, fans, pumps, conveyors and machine tool drives. Inverters are widely used in industrial and commercial applications due to the growing need for speed control in ASD systems. Fast switching transients and the common mode voltage, in interaction with parasitic capacitive couplings, may cause many unwanted problems in the ASD applications. These include shaft voltage and leakage currents. One of the inherent characteristics of Pulse Width Modu

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TENG, PING-TSE, and 鄧平擇. "Microstepping Motor on Instrument Panel using PWM Drives Method." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/8w55pa.

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碩士<br>中華科技大學<br>電子工程研究所碩士班<br>107<br>The study aims at developing the indicator-driven controller on the instrument panel. Traditionally, the instrument panel was used to drive the indicator with mechanical electromagnet, to buffer as well as to turn back to the original position with the spring of the taut band. However, the precise result of the mechanical structure itself can’t be targeted because of its unstable errors. Therefore, the present indicator on the instrument panel driven by the electronic signals utilizes PM stepping motor of NMB indicator to operate the indicator. The features

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"Digital PWM control of brush-less DC (BLDC) motor drives." ILLINOIS INSTITUTE OF TECHNOLOGY, 2010. http://pqdtopen.proquest.com/#viewpdf?dispub=3370892.

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SAROA, HARSHA. "SIMULATION AND CONTROL OF PWM CONVERTER FED INDUCTION MOTOR DRIVES." Thesis, 2014. http://dspace.dtu.ac.in:8080/jspui/handle/repository/15608.

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The need for studies of control strategies for induction motor drives is justified with the proliferation of application of these drives in industries and production plants where materials have to be both processed and transported and where a high productivity is one of the key factors. This work is focused on developing effective control strategies and configurations for control scheme of industrial induction motor drives. The work is extended to harmonics and reactive power control of the industrial induction motor drive with a PWM converter. The proposed control strategy is analyzed

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Rakesh, P. R. "PWM Techniques for Split-Phase Induction Motor Drive." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/3136.

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A split-phase induction motor (SPIM) is obtained by splitting each of the three-phase stator windings of an induction motor into two equal halves. This results in two sets of three-phase windings with a spatial angle diﬀerence of 30◦ (electrical) between them. The two sets of windings are fed from two diﬀerent voltage-source inverters for speed control of the split-phase motor drive. Low dc bus voltage requirement and improved torque profile are some of the advantages of the split-phase motor, compared to the normal three-phase induction motor. A pulse width modulation (PWM) technique is used

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Rakesh, P. R. "PWM Techniques for Split-Phase Induction Motor Drive." Thesis, 2014. http://hdl.handle.net/2005/3136.

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A split-phase induction motor (SPIM) is obtained by splitting each of the three-phase stator windings of an induction motor into two equal halves. This results in two sets of three-phase windings with a spatial angle diﬀerence of 30◦ (electrical) between them. The two sets of windings are fed from two diﬀerent voltage-source inverters for speed control of the split-phase motor drive. Low dc bus voltage requirement and improved torque profile are some of the advantages of the split-phase motor, compared to the normal three-phase induction motor. A pulse width modulation (PWM) technique is used

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Basu, Kaushik. "Minimization Of Torque Ripple In Space Vector PWM Based Induction Motor Drives." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1435.

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Shi, Bo-Wei, and 施柏維. "Study of Decoupled Direct Control for Induction Motor Drives with Digitalized PWM." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/11521603989547310865.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>93<br>The traditional indirect field-oriented control (FOC) needs nonlinear coordinate transformation and that will increase the computation time. To improve the above drawback, the decoupled direct control (DDC) for the induction motor drive is developed in this thesis. The decoupled direct control is based on a decoupled matrix, which is used to directly control torque and rotor flux to generate voltage command and make the estimated torque and rotor flux track to their command quickly. The method has some advantages: 1) Because of directly controlling the rotor

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Basu, Kaushik. "Minimization Of Torque Ripple In Space Vector PWM Based Induction Motor Drives." Thesis, 2005. https://etd.iisc.ac.in/handle/2005/1435.

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Kanchan, Rahul Sudam. "Investigations On PWM Signal Generation And Common Mode Voltage Elimination Schemes For Multi-Level Inverter Fed Induction Motor Drives." Thesis, 2005. https://etd.iisc.ac.in/handle/2005/1405.

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Kanchan, Rahul Sudam. "Investigations On PWM Signal Generation And Common Mode Voltage Elimination Schemes For Multi-Level Inverter Fed Induction Motor Drives." Thesis, 2005. http://etd.iisc.ernet.in/handle/2005/1405.

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Chung, Lin Hsien, and 林賢忠. "Investigation of Strategies for Suppressing Common-Mode Voltage at Motor Terminals in Voltage-Fed PWM Drives." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/60249010037044212670.

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碩士<br>南台科技大學<br>電機工程系<br>92<br>As the advance of switching speed for power electronics components in recent year, it generates some problems related to the voltage-fed PWM inverter, especially the adverse influence resulting by the common mode noise which is present at the motor terminal. In this thesis, the response to these concerns will be studied to solve those serious problems. The topic will be first focused on the analysis of the common mode noise phenomenon on the drive output. The design aspects of an inverter to suppress the common mode noise gradient at the drive output will be als

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Chih, Yi-Te, and 池怡德. "Study of Direct Torque Control for Permanent Magnet Synchronous Motor Drives with Space Voltage Vector PWM." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/51421247337279610310.

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碩士<br>國立成功大學<br>工程科學系碩博士班<br>93<br>This thesis presents a new direct torque control (DTC) system to control the permanent magnet synchronous motor (PMSM) based on a TMS320F2812 digital signal processor (DSP) experiment board. The digitalized PMSM control system was implemented by using DSP experiment board with advantages such as high precision and reliability and the controlling error caused by the variance of temperature or the interference of noise can be banished. 　The proposed DTC scheme in this thesis uses a flux compensator to eliminate the error in stator flux estimation at low speed

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Haq, Saeed UL. "A Study on Insulation Problems in Drive Fed Medium Voltage Induction Motors." Thesis, 2007. http://hdl.handle.net/10012/3052.

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The PWM (pulse-width-modulated) type voltage source converters (VSC) allow a precise speed control of induction motors with maximum achievable energy efficiency. However, the rapid growth of this technology has created quite a concern, as the PWM waveform produces complex transients that stress the motor insulation, to much severe levels, compared to the normal sinusoidal voltage waveforms. As a result, the machine may fail prematurely due to increased dielectric heating; high turn-to-turn stress caused by non-linear potential distributions; increased partial discharge (PD) activities due to o

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Baiju, M. R. "Investigations On Multilevel Inverter Topologies And Modulation Schemes For Induction Motor Drives." Thesis, 2004. https://etd.iisc.ac.in/handle/2005/1126.

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Baiju, M. R. "Investigations On Multilevel Inverter Topologies And Modulation Schemes For Induction Motor Drives." Thesis, 2004. http://hdl.handle.net/2005/1126.

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